Supertech — charging too much as per possession added super built up area

Address:

Sector 58, Noida

I booked a 3 bhk flat with super built up area of 1595 on 2nd sept 2012 in supertech eco village 1, noida extension. At that time the possession date was mar 2015. After doing a long mental harassment they sent a pre possession letter on april 2019. Not that was a biggest mental harassment cause they added illegal charges of rs. 10, 35, 500 lakh which include added super built up area, escalation charges, compensation charges, etc. Which were never told to us. They made a one sided agreement. They increased my super built up area 265 with out my consent and with out increasing the carpet area of inner walls. Saying that they increased the balcony by 5 soft. Now they are asking money for that. They also added escalation charges. They are asking penalty of 24% on delay payment and giving me only rs 5/sqft. Now they are threatening us as well. They are torching me. We waited for the possession for last last 4 years which is a very very big time. I request you to do the justice. I am pregnant woman and getting harassed by supertech since april 2019.